-69.4% is the change from 879 to 269
Calculation steps:
[( 269 - 879 ) ÷ 879] x 100 = -69.4%
Formula
Percentage change = [(269 - 879) / 879] x 100
Subtract the new number by the original number
269 - 879 = -610
-610 ÷ 879 = -0.6939704209328783
-0.6939704209328783 x 100 = -69.4%